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Natural Radio Lab

Natural Radio is the VLF radio emissions that originate terrestrially from lightning and within the earth's magnetosphere through interaction with the Sun. Most of these radio signals, sferics, tweeks, whistlers, chorus and others, occur within the range of human hearing, and can be heard with simple receivers as described on this site.

Natural Radio Lab also looks at Space Weather and Geomagnetic Storms. These are affected by solar activity such as the solar wind, sunspots, solar flares and coronal mass ejections or CMEs. In the popular media, these events are often loosely referred to as "solar storms" or "sun storms".

Please explore this site. I hope you go beyond reading what's here and actually go out and take the opportunity to hear whistlers or the enchanting sounds of the dawn chorus.

Mark Karney, N9JWF
Webmaster

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What is “Chorus”?

naturalradiolab.com Posted on January 28, 2012 by Mark KarneyOctober 21, 2012

Chorus or “Dawn Chorus” is a VLF emission that can sound like a flock of birds or the sound of a pond full of frogs or some combination thereof.  The name “dawn” chorus may have originated because it sounds like birds, frogs and insects in the morning or because it is most often heard just after sunrise. Chorus is often heard in the early morning hours during periods of high geomagnetic activity.

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